Applying a sophisticated approach to predict CO2 solubility in brines: application to CO2 sequestration

Specification of CO2 and brine phase behaviour plays a vital role in CO2 sequestration and CO2 reduction from atmosphere to deep saline aquifers. Because CO2 solubility in brines determine how much carbon can be stored in deep saline aquifers. To tackle the referred issue, high precise model with low uncertainty parameters called ‘least square support vector machine (LS-SVM)’ was executed to predict CO2–brine solubility. The proposed intelligent-based approach is examined by using extensive experimental data reported in open literature. Results obtained from the proposed numerical solution model were compared with the relevant experimental CO2–brine solubility data. The average relative absolute deviation between the model predictions and the relevant experimental data was found to be <0.1% for LS-SVM model.

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